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(No Model.) 2 Sheets-Sheet 1.

f O. J. HEITZMAN.

EXPRESS GALL. No. 381,472. Patented Apr.-17,- 1888.

NY PETERS. Phcloillhogmphnr. Wuhlnglom 0.1:.

(No Model.) 2 Sheets-Sheet 2. 0. J. HEITZMAN.

EXPRESS CALL. No. 381,472. Patented Apr. 17, 1888.

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N PETERS, Phnlo-Lilhographer. Waflungion. 0.1;

35 Fig. a side view of the same.

UN ETE STATES GHARLES J. HEITZMAN, OF NEW YORK, N. Y.

EXPRESS-CALL.

SPECIFICATION forming part of Letters Patent No. 381,472, dated April17, 1888.

Application filed November 25, 1887. Serial No. 256,176. (No model.)

To aZZ whont it may concern:

Be it known that 1, CHARLES J. HEITZMAN,

a citizen of the United States, residing at the city of New York, in thecounty of New York 5 and State of New York, have invented a new anduseful Improvement in Express'or other Calls, of which the following isa specification.

The nature of the invention consists in the combination, with a swingingcrane hinged or attached to the outside wall of a house near a window ordoor or other convenient support, of a hollow drum mounted in suitablebearings upon the outer end of said crane, into and out of which drum iswound a flexible strap at-' V tached to an axle revolving in said drum,and

said drum to act upon the said axle, substantially as hereinafter fullydescribed.

The nature of the invention also consists in the details or" combinationand construction, substantially as illustrated in the drawings,

: hereinafter described, and eventually pointed out in the claims.

Figure 1 is a side view in elevation, illus' trating my newly-inventedexpresscall with the signs displayed. Fig. 2 illustrates a trans versesection of the drum, and shows theconnection of the actuating-spring.Fig. 3 is another transverse section of the drum, illustrating theflexible strap partly wound in. Fig. 4 is an edge View of the flexiblestrap, and Fig. 6 is an axial section of the drum illustrating therelative positions of the spring and the flexible strap within the drum.

A designates the crane, which is hinged or 40 attached to the wall of ahouse, as illustrated,

near a door or Window, so that it can be drawn in near enough to bewithin reach of the operator, or pushed out so as to make a display tothe passers-by. Upon the outer end of the horizontal arm of this craneis mounted the drum B, its axle B running in bearings at A and A One endof this drum is chambered to accommodate the spiralspring F, one end ofwhich is attached to the interior of thedrum B and the other end to theaxle B of the drum.

The drum B is hollow within, as illustrated. To the shaft B within thehollow of the drum is attachedthe end of the flexible strap D, so thatthe said strap D, carrying the series of signs 0, may be wound into thedrum B. The

spring F and the strap D are wound in different directions on the shaftB, so that the unwinding of the strap D will wind up the spring F, andthe resilience of the spring F has a constant tendency to wind up thestrap D. The end of the strap D is provided with a weight so adjustedthat it will just counterpoise the resilience of the spring F. Upon thestrap D is a series of spring-clips, c, which may be of any approvedform. In these are secured the signs 0, so that they may be taken offthe strap and interchanged at pleasure. The signs may be of any suitablesize and of any de sired form, may be lettered in any approved way, andare detachably secured to the strap D, as above described, the wholedevice to be as illustrated in the accompanying drawings.

To use this device the crane is drawn up to the window or door so as tobring the drum within reach of'the operator, who then pulls out thestrap D far enough to accommodate the sign or card; orif that sign orany part of a series of signs be too far he lifts the strap a little,and the resistance of the weight E being removed the resilience of thespring F will wind in the strap D as far as may be desired. On accountof the fact of the weight E exactly counterpoising the resilience of thespring F, the strap D will remain in Whatever position it may be placed.When the signs have been properly adjusted, the crane is pushed awayfrom the door or window far enough to display the signs.

\Vhat I claim as my invention, and desire to secure by Letters Patent,is

1. The combination, with a swinging crane hinged or attached to theoutside wallOf a house near a window or door or other convenientsupport, of a hollow drum mount-ed in suitable bearings upon the outerend of said crane, into and out of which drum is wound a flexible strapattached to an axle revolving in said drum, and to which are attached,as specifled, by means of spring-clips, one or more cards or signsbearing the name of an express ened to the strap D, the signs-C,detachably secured by the clips 0, and the weight E, attached to thestrap D, all substantiailyas and for the purpose set forth. I 5

or other company, said strap being loaded to counterpoise the resilienceof a spring which is mounted in said drum to act upon said axle,substantially as and for the purpose set forth.

5 2. In an express orother call, the combina- In witness whereof Ihereunto set my hand 'tion of the crane A, hinged or attached to theinpresence of two Witnesses.

Wall of a building or other convenient support, the drum B, mounted inbearings at A and A upon said crane, the spring F, ar-- Witnesses: r0ranged and attached as specified, the strap D, B. VON BiiLTzINGsToWENs,attached to the axle B, the spring-clips 0, fast- 0. E. MCDONALD.

CHAS. J. HEITZMAN/

